Effects of Chromotherapy on the Cognitive Ability of Older Adults: A Quasi-Experimental Study

This study aimed to assess the effects of chromotherapy on the cognitive ability of older adults. This quasi-experimental pretest and posttest study was conducted among 135 older adults in Ilocos Sur, Philippines, between August and September 2015. The participants were divided into three groups: red, green, and white lights, with 45 people in each group. The cognitive ability of older adults was measured using an adapted Mini–Mental State Exam (MMSE). After the interventions, the red and green light experimental groups acquired a modest increase in cognitive ability scores against the comparison white light group (p < 0.001). However, the effects were not significantly different between the red and green lights postintervention (p > 0.05). The chromotherapy is effective in improving the cognitive ability of older adults. Specifically, the red and green lights are better than the white light in increasing the cognitive ability of older adults.